I have a 4/4 with Librands manifold,cold air induction to k+n filter in standard air box and sports exhaust box from Ledgerwood Morgan.
As the Austrian above says on a small throttle opening I have a deep resonant bark..when the taps are open it is as loud as the Arp4 I tried.
It pops and bangs on the overrun..sounds wonderful through tunnels and reverberates from walls and buildings..I love it !!!..it sounds more powerful than the measured 139.6 bhp...I can almost play a tune on it !!!
I have done two long runs to Italy with this set up with no problems. I found the Arp4 noise oppressive in comparison
Much of the sound will depend on correct fitment so the exhaust does not catch on body...I took time to get this right.
Very happy !!!!
